EP 0691597 A1 19960110 - Switch device and electronic instruments equipped with the switch device
Title (en)
Switch device and electronic instruments equipped with the switch device
Title (de)
Schalteinrichtung und mit der Schalteinrichtung ausgestattete elektronische Geräte
Title (fr)
Dispositif de commutation et instruments électroniques équipés de ce dispositif de commutation
Publication
Application
Priority
- JP 18057994 A 19940707
- JP 30488294 A 19941208
Abstract (en)
When an electronic instrument has taken a predetermined attitude, an attitude-detecting switch (19) incorporated in the instrument detects the attitude, and outputs a switch signal to a CPU (15). The CPU (15), in turn, drives a lighting device (21) for lighting a liquid crystal display device (17). The lighting device (21) is driven, for example, only when a predetermined number of pulses of the switch signal are generated within a predetermined period of time, or only when the switch signal has continued for a predetermined period of time or more. Thus, there are cases where the lighting device (21) is not driven irrespective of the generation of the switch signal. As a result, the lighting device (21) is prevented from operating so often, and hence the life of its battery is lengthened. <MATH>
IPC 1-7
IPC 8 full level
G04C 3/00 (2006.01); H01H 35/02 (2006.01)
CPC (source: EP US)
G04C 3/002 (2013.01 - EP US); H01H 35/025 (2013.01 - EP US); H01H 2300/054 (2013.01 - EP US)
Citation (search report)
- [XY] DE 2449071 A1 19760422 - DONALD BURTON TODD O
- [YA] GB 1540562 A 19790214 - CITIZEN WATCH CO LTD
- [Y] US 4135067 A 19790116 - BITKO SHELDON S
- [A] US 4095408 A 19780620 - KASHIO TOSHIO
- [A] DE 2828566 A1 19790125 - RING LARS MAGNUS DIPL ING
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0691597 A1 19960110; EP 0691597 B1 19980520; CN 1053748 C 20000621; CN 1127373 A 19960724; DE 69502546 D1 19980625; DE 69502546 T2 19981126; HK 1013448 A1 19990827; KR 100188548 B1 19990601; US 5612931 A 19970318
DOCDB simple family (application)
EP 95110576 A 19950706; CN 95108116 A 19950707; DE 69502546 T 19950706; HK 98114747 A 19981222; KR 19950019967 A 19950707; US 49817195 A 19950705